Maybee conversion to/from character code is easier. Notice the conversion code in the linked article.
(1) How often do you convert from machine integers to binary character representations?
(2) If you're referring to
for(j = 0; j < bitlen; j++) { bin[j] = (i & 1) ? '1': '0'; i >>= 1; }
(1) How often do you convert from machine integers to binary character representations?
(2) If you're referring to
that's the exact same for a negabinary machine.